Home / 2,809.90-3,876.28-1,816.03

Finding the Fourth Proportional to 2,809.90, 3,876.28 and 1,816.03

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Solution

The fourth proportional to 2,809.90, 3,876.28 and 1,816.03 is: 2,505.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.90 : 3,876.28 = 1,816.03 : x
  2. Step 2: Convert to fraction form
    2,809.90/3,876.28 = 1,816.03/x
  3. Step 3: Cross multiply
    2,809.90x = 3,876.28 × 1,816.03
  4. Step 4: Simplify right side
    2,809.90x = 7,039,440.77
  5. Step 5: Solve for x
    x = 7,039,440.77/2,809.90
  6. Step 6: Final answer
    x = 2,505.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.